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/*
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
/*
* File: compat_30.h
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 4/91
*
* Compatibility defs to retrofit Mach 3.0 drivers
* into Mach 2.6.
*/
#ifndef _SCSI_COMPAT_30_
#define _SCSI_COMPAT_30_
#include <kern/assert.h>
#ifdef MACH_KERNEL
/*
* Mach 3.0 compiles with these definitions
*/
#include <device/param.h>
#include <device/io_req.h>
#include <device/device_types.h>
#include <device/disk_status.h>
/*
* Scratch temporary in io_req structure (for error handling)
*/
#define io_temporary io_error
#else /*MACH_KERNEL*/
/*
* Mach 2.x compiles with these definitions
*/
/* ??? */
typedef int dev_mode_t;
typedef int *dev_status_t; /* Variable-length array of integers */
/* ??? */
/* Buffer structures */
typedef int io_return_t;
#include <sys/param.h>
#include <sys/buf.h>
#define io_req buf
typedef struct buf *io_req_t;
#define io_req_alloc(ior,size) ior = geteblk(size)
#define io_req_free(ior) brelse(ior)
/*
* Redefine fields for drivers using new names
*/
#define io_op b_flags
#define io_count b_bcount
#define io_error b_error
#define io_unit b_dev
#define io_recnum b_blkno
#define io_residual b_resid
#define io_data b_un.b_addr
#define io_done b_iodone
/*
* Redefine fields for driver request list heads, using new names.
*/
#define io_next av_forw
#define io_prev av_back
/*#define io_next b_actf*/
/*#define io_prev b_actl*/
#define io_link b_forw
#define io_rlink b_back
/*#define io_count b_active*/
/*#define io_residual b_errcnt*/
#define io_alloc_size b_bufsize
/*
* Scratch temporary in io_req structure (for error handling)
*/
#define io_temporary b_pfcent
/*
* Redefine flags
*/
#define IO_WRITE B_WRITE
#define IO_READ B_READ
#define IO_OPEN B_OPEN
#define IO_DONE B_DONE
#define IO_ERROR B_ERROR
#define IO_BUSY B_BUSY
#define IO_WANTED B_WANTED
#define IO_BAD B_BAD
#define IO_CALL B_CALL
#define IO_INTERNAL B_MD1
#define IO_SPARE_START B_MD1
#include <sys/disklabel.h>
/* Error codes */
#include <sys/errno.h>
#define D_SUCCESS ESUCCESS
#define D_IO_ERROR EIO
#define D_NO_SUCH_DEVICE ENXIO
#define D_INVALID_SIZE EINVAL
#define D_ALREADY_OPEN EBUSY
#define D_INVALID_OPERATION EINVAL
#define D_NO_MEMORY ENOMEM
#define D_WOULD_BLOCK EWOULDBLOCK
#define D_DEVICE_DOWN EIO
#define D_READ_ONLY EROFS
/*
* Debugging support
*/
#define db_printf kdbprintf
#define db_printsym(s,m) kdbpsymoff(s,1,"")
/*
* Miscellaneous utils
*/
#define check_memory(addr,dow) ((dow) ? wbadaddr(addr,4) : badaddr(addr,4))
#include <sys/kernel.h> /* for hz */
#include <scsi/adapters/scsi_user_dma.h>
#ifdef DECSTATION
#include <mach/mips/vm_param.h> /* for page size */
#define ULTRIX_COMPAT 1 /* support for rzdisk disk formatter */
#endif /*DECSTATION*/
#endif /*MACH_KERNEL*/
#endif /*_SCSI_COMPAT_30_*/
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